Why are men never prepared for a no when they propose?

Every time a woman says no to a proposal the man acts like she's speaking another language for the first ten no's, then acts like he just saw a puppy die.

I mean I've never been in that situation so I can't say I'd do any better but I thought there would be some sort of etiquette around that. You're putting her on the spot. 😅 Is it not like being turned down for anything else in life where yeah it sucks but you gotta give them a way out?